CN104279363B - Device for providing motor reverse drive resistance - Google Patents

Device for providing motor reverse drive resistance Download PDF

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Publication number
CN104279363B
CN104279363B CN201410302222.9A CN201410302222A CN104279363B CN 104279363 B CN104279363 B CN 104279363B CN 201410302222 A CN201410302222 A CN 201410302222A CN 104279363 B CN104279363 B CN 104279363B
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CN
China
Prior art keywords
brake
motor
holder
block
release arm
Prior art date
Application number
CN201410302222.9A
Other languages
Chinese (zh)
Other versions
CN104279363A (en
Inventor
T·杰克逊
Original Assignee
费希尔控制国际公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US13/933,946 priority Critical patent/US9634541B2/en
Priority to US13/933,946 priority
Application filed by 费希尔控制国际公司 filed Critical 费希尔控制国际公司
Publication of CN104279363A publication Critical patent/CN104279363A/en
Application granted granted Critical
Publication of CN104279363B publication Critical patent/CN104279363B/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/02Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as a helical band or coil with more than one turn, with or without intensification of the braking force by the tension of the band or contracting member
    • F16D49/04Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as a helical band or coil with more than one turn, with or without intensification of the braking force by the tension of the band or contracting member mechanically actuated
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/16Brakes with two brake-blocks
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00Parts or details
    • F16D65/14Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/041Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
    • F16K31/043Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00Type of actuator operation force
    • F16D2121/14Mechanical
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00Components of actuators
    • F16D2125/18Mechanical mechanisms
    • F16D2125/20Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/22Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
    • F16D2125/28Cams; Levers with cams
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00Components of actuators
    • F16D2125/18Mechanical mechanisms
    • F16D2125/58Mechanical mechanisms transmitting linear movement
    • F16D2125/66Wedges
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00Components of actuators
    • F16D2125/18Mechanical mechanisms
    • F16D2125/58Mechanical mechanisms transmitting linear movement
    • F16D2125/68Lever-link mechanisms, e.g. toggles with change of force ratio
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means

Abstract

Describe the device for providing motor reverse drive resistance.Illustrative device described herein includes the brake of the output shaft for engaging motor.Illustrative device further includes the braking release arm for being operably coupled to the brake.Counteraction arm is fixed relative to the braking release arm and is operably coupled to the motor.The counteraction arm makes the brake be detached with the output shaft of the motor in response to the reaction torque of the motor.

Description

Device for providing motor reverse drive resistance

Technical field

The disclosure relates generally to motor, more particularly, to one kind for providing motor reverse drive resistance The device of (backdrive resistance).

Background technology

Process device generally includes multiple control loops, connects into network jointly to produce product.Rotary valve is often Critical elements in control loop.The fluid of the operable flowing of rotary valve, such as gas, steam, water or chemical mixture, to protect Process variable is held as close to ideal set point.The rotary valve of sometimes referred to as valve or rotating valve assembly generally includes valve Body, provides power to operate the actuator of (for example, opening or closing) valve (for example, electric actuator, hydraulic pressure at internal trim Actuator etc.) and multiple additional valve fitments, locator, converter, supply pressure adjuster, manual operator etc..

Electric actuator is commonly used is operably coupled to valve via drive system (for example, one or more gears) The flowing controling part or closure member (for example, valve disc) of (for example, rotary valve, control valve or throttle valve etc.).In operation, work as electricity When power is fed into motor, electric actuator makes flowing controling part rotate between a closed position and a open position, to adjust The fluid that section passes through valve flow.When the valves are closed, flowing controling part, which is commonly configured to be sealingly engaged, is arranged in fluid flowing Valve seat in access, to prevent the fluid between the entrance and exit of valve from flowing.

When valve is located at closed position and electric power is provided to motor, motor usually provides sufficient seat load to stream Body flowing controling part, to ensure that fluid flow control member is sealingly engaged valve seat.When electric power is removed from motor, drive system It can be designed to the position for maintaining fluid flow control member relative to valve seat.However, when actuator is in place, from passing through valve The power of the fluid of flowing can be sent to motor.These power are enough back drive motor, and therefore fluid may be caused to flow The unwanted change in location of control unit, this has unknown influence for control loop.

Invention content

Disclosed herein is the devices for providing motor reverse drive resistance.Illustrative device includes being used for engaging motor Output shaft brake.Illustrative device further includes the braking release arm for being operatively engaged to the brake.It is anti-to make The motor is fixed and is operably coupled to relative to the braking release arm with arm, so that the brake is in response to institute The reaction torque for stating motor is detached with the output shaft of the motor.

In another example, device includes the first brake(-holder) block and the second brake(-holder) block.Described device further includes operationally It is couple to the spring of first brake(-holder) block and second brake(-holder) block.The spring is by first brake(-holder) block and described second Brake(-holder) block is maintained at bonding station, and the rotation of the output shaft of motor is prevented when being removed in the electric power for being supplied to motor.It is described Device further includes the braking release arm for being operably coupled to first brake(-holder) block and second brake(-holder) block.Described device is also Include fixed to the counteraction arm braked release arm and be operably coupled to the motor.The counteraction arm makes institute It states braking release arm and biases first brake(-holder) block and second brake(-holder) block to detach the output shaft to allow the output The rotation of axis.

In yet another embodiment, device includes brake apparatus, and it is described defeated to prevent to be used for the output shaft of brake motor The rotation of shaft.Described device further includes separator, is used to from the output shaft detach the brake apparatus to allow Rotation of the output shaft in response to the reaction torque of the motor.

Description of the drawings

Fig. 1 is the stereogram of illustrative rotating valve assembly described herein.

Fig. 2 is the enlarged drawing for the illustrative actuator for including illustrative motor and illustrative brake assemblies.

Fig. 3 A are the illustrative motor of Fig. 2 and the detail view of brake assemblies.

Fig. 3 B are the illustrative motor of Fig. 3 A and the viewgraph of cross-section of brake assemblies.

Fig. 3 C are the illustrative motor of Fig. 3 A and Fig. 3 B and brake assemblies are in the viewgraph of cross-section of bonding station.

Fig. 3 D are the illustrative motor of Fig. 3 A and Fig. 3 B and brake assemblies are in the viewgraph of cross-section of disengaged position.

Specific implementation mode

Some embodiments are shown in drawings above, and are described in detail below.In describing these embodiments, phase Seemingly or identical reference numeral is used for indicating same or analogous component.These attached drawings are simultaneously not required to scale, in attached drawing Some features and some views magnification ratio or can schematically show in order to clear and/or succinct.In addition, in the description Several embodiments have been described.Any feature of these embodiments may be included in other embodiments other feature, replace or Person combines the other feature of other embodiments.

In general, the embodiments described herein when the electric power for being supplied to motor is removed to the driving of electric actuator Motor provides (for example, via the brake for the output shaft for being couple to motor) motor reverse drive resistance.For example, when rotary valve (for example, associated with rotary valve when fluid flow control member (for example, valve disc, valve ball, centrifugation valve plug etc.) is in setting position Control loop have arrived at ideal set point), being supplied to the electric power of drive motor can remove.In these embodiments, Valve position can remain substantially stationary.However, when using electric actuator, comes from and rotating when actuator is in setting position The power of the fluid flowed in valve can be applied to the output shaft of motor.Consequently, it can happen output shaft and being couple to output shaft The unwanted variation of the position of any flowing controling part, this has unexpected or unknown influence to control loop.In addition, being Shaft position is corrected to change in response to the repetition of shaft position, drive motor is once again powered up by control loop, causes motor real It is continuously run in matter.

Embodiment disclosed herein includes brake assemblies, may be arranged in the shell or shell of electric actuator and can grasp Make ground and be couple to drive motor, with reverse actuating force offer mechanical resistance caused by the fluid that is flowed by rotary valve.Therefore, The position of flowing controling part is mechanically held in place, and the electronics of the repetition of the fluid flow control member of valve is thereby eliminated It reconfigures.

Pass through illustrative brake assemblies described herein, when drive motor operation (for example, energization), the anti-work of motor With torque (or reaction force or power output) so that the braking release arm of brake assemblies detaches brake(-holder) block with the output shaft of motor, To allow output shaft to rotate.More specifically, reaction torque makes fixed (for example, being spirally connected) to the anti-work of the brake assemblies of motor It is rotated with arm.The moving in rotation of counteraction arm is rigidly coupled to the braking release arm of counteraction arm.Brake the movement of release arm So that brake(-holder) block separates, to form opening between brake(-holder) block and output shaft, thus output shaft is allowed to rotate freely through.

It (powers for example, being cancelled to motor by removing electric power from motor) when drive motor stops, spring load will Brake(-holder) block pushes together so that braking chip bonding output shaft simultaneously prevents output shaft from rotating.More specifically, brake(-holder) block is via being couple to The spring of brake(-holder) block keeps the spring of pillar and is held in place.The load generated by spring pushes together brake(-holder) block defeated to clamp Shaft.However, as described above, the reaction torque of drive motor overcomes spring load in operation, and brake release arm engagement The dynamic brake(-holder) block of pushing of brake(-holder) block separates.

Fig. 1 shows illustrative rotating valve assembly 100 described herein.Rotating valve assembly 100 includes via installation branch Frame 106 is operably coupled to the electric actuator 102 of rotary valve 104.Rotary valve 104 (for example, butterfly valve, eccentric stopcock, Whole-through diameter ball valve, segmented ball valve etc.) include valve body 108, the fluid flowing being limited between entrance 112 and outlet 114 is logical Road 110.Fluid flow control member 116 (for example, valve disc) is arranged in fluid flow passages 110 and includes sealing surfaces 118, Sealing surfaces 118 are sealingly engaged valve seat or annular seal surface 120 (for example, sealing ring), pass through entrance 112 and outlet with control The fluid of fluid flow passages 110 between 114 flows.Valve plug 122 is coupled to (for example, screw thread coupling) in first end and arrives fluid Flowing control or closure member 116, and it is operably coupled to electric actuator 102 in second end.Mounting bracket 106 and multiple solid Determine part 124 and valve body 108 is couple to electric actuator 102.

Electric actuator 102 includes shell 126, and shell 126 limits the chamber 128 for accommodating drive system.

In the illustrated embodiment, fluid flow control member 116 is described as valve disc.However, in other embodiments, Fluid flow control member 116 can be any fluid flow control member appropriate 116, for example, segmented valve ball etc..

Fig. 2 shows the electric actuators 200 being used together with the illustrative rotating valve assembly 100 of Fig. 1.In the implementation In example, drive system 202 includes motor 204, transmission device 206 and brake assemblies 208.Transmission device 206 is by motor 204 Rotary motion of the rotary motion transmission to drive shaft 210.

Transmission device 206 can be configured to increase the torque generated by motor 204 and increased torque be transmitted to driving Axis 210.The increased torque for being transmitted to drive shaft 210 makes fluid flow control member 116 (Fig. 1) be connect by the power of bigger Valve seat 120 (Fig. 1) is closed, and thus provides the closer sealing engagement with valve seat 120, in fluid flow control member 116 sealing engagement valve seats 120 and electric power prevent to flow by the fluid of valve body 108 (Fig. 1) when being provided to motor 204.

As shown, transmission device 206 is arranged in the chamber 212 of the shell 214 of electric actuator 200.Motor 204 It is arranged in the chamber 212 of electric actuator 200.In some embodiments, motor 204 can via such as fixing piece and/or appoint What its fixing device appropriate is couple to the gear-box (for example, shell of gear-box) of transmission device 206.However, other In embodiment, motor 204 can be couple to the shell of electric actuator 200 via fixing piece or any other fixing device appropriate 214.In some embodiments, motor 204 can be coupled to the inner surface of shell 214 or the outer surface of shell 214.Motor 204 Can be any motor, for example, exchange (AC) motor, direct current (DC) motor, inverter motor, stepper motor, servo motor or Any other motor appropriate or driving part.

In the illustrated embodiment, transmission device 206 includes the first tooth of the output shaft 220 for being rigidly coupled to motor 204 Wheel 218 simultaneously engages intermediate gear 222.First gear 218 is couple to by intermediate gear 222 drives gear 224 and thus by motor 204 are couple to driving gear 224.Driving gear 224 includes the hole (not shown) for accommodating drive shaft 210,210 energy of drive shaft Enough rotated freely through around axis 216.

As indicated, drive shaft 210 is bar.The second end of the openings house valve rod 122 of drive shaft 210.Although not shown, But in other embodiments, drive shaft 210 can be gear train, ball screw system and/or any other biography appropriate The rotary motion of motor 204, is transmitted to the rotary motion of valve rod 122 by dynamic system.

Referring to Fig. 1 and Fig. 2, in operation, motor 204 surrounds axis 228 along first direction 226 (for example, side clockwise To) driving or rotating output shaft 220, to move (for example, rotation) rotary valve 104 towards open position, and surround 228 edge of axis The second direction opposite with first direction 226 (for example, counterclockwise) driving or rotating output shaft 220, with towards close stance Set mobile (for example, rotation) rotary valve 104.

In order to move (for example, rotation) rotary valve 104 towards open position, electric power is provided to motor 204 with along first 226 rotating output shaft 220 of direction.Transmission device 206 is so that driving gear 224 is rotated around drive shaft 210, so that drive shaft 210 are moved (for example, rotation) along axis 216 with rotary motion.More specifically, when output shaft 220 and first gear 218 are along the When one direction 226 rotates, intermediate gear 222 makes driving gear 224 be rotated along first direction 232 around axis 216.Therefore, it drives Moving gear 224 rotates around drive shaft 210 and drive shaft 210 is made to be rotated on axis 216 in a first direction 232.Drive shaft 210 so that valve shaft 122 and so that fluid flow control member 116 far from valve seat 120 rotate, with allow or increase pass through into The fluid flowing of fluid flow passages 110 between mouth 112 and outlet 114.

In order to move (for example, rotation) rotary valve 104 towards closed position, electric power is provided to motor 204 so that output Axis 220 is around 230 (for example, counterclockwise) rotation in a second direction of axis 228.Output shaft 220 in a second direction 230 rotation Turn so that drive shaft 210 is moved along axis 216 in second direction 234 (for example, rotation).More specifically, working as output shaft 220 With first gear 218 around axis 228 in a second direction 230 rotation when, intermediate gear 222 make driving gear 224 surround axis 216 234 rotations in a second direction, so that drive shaft 210 is around 234 movements (for example, the rotation) in a second direction of axis 216. Driving gear 224 around axis 216 in a second direction 234 rotation drive shaft 210 is rotated towards valve seat 120, and thus So that fluid flow control member 116 is rotated towards valve seat 120, to prevent or limit by between entrance 112 and outlet 114 The fluid of fluid flow passages 110 flows.

When rotary valve 104 is located at closed position, the seating face 118 of fluid flow control member 116 is sealingly engaged valve seat 120 to prevent the fluid by rotary valve 104 from flowing.When fluid flow control member 116 engages valve seat 120, due to driving Axis 210 is rigidly coupled to valve rod 122, so drive shaft 120 is prevented from further rotating towards valve seat 120.In other words, when When fluid flow control member 116 is sealingly engaged valve seat 120, drive shaft 210 is located at stroke end position.However, in other realities Apply in example, stroke end position or end of travel can be happened at the surface engagement shell 214 of drive shaft 210 part or surface or When any other surface of person.

When electric power is removed from motor 204, motor 204 and/or transmission device 206 may lack enough resistances to maintain The position of drive shaft 210 or the rotary motion for preventing drive shaft 210, and thus lack enough resistances to maintain fluid to flow The position of control unit 116 or the rotary motion for preventing fluid flow control member 116.When the electric power for being supplied to motor 204 When removal, sufficient reverse drive resistance provides resistance and produces being essentially prevented by the fluid flowing effect in rotary valve 104 Raw movement (for example, power).Lack the reverse drive resistance, the power from fluid flowing may be applied to motor 204 and draw Play the unwanted change in location of fluid flow control member 116.

It is such as more fully described with reference to Fig. 3 A-3D, when brake assemblies 208 are operably coupled to motor 204, such as Fruit electric power is removed from motor 204, and brake assemblies 208 provide mechanical braking, to maintain the position of fluid flow control member 116. For example, it may be desirable to rotary valve 104 is maintained closed position, to avoid in emergency, power failure or being supplied to electronic Occur to overflow (chemistry overflows) when the electric power of actuator 102 (for example, motor 204) is removed or closes.Otherwise, in such as electric power Sufficient or enough reverse drive resistance cannot be provided in interruption to fluid flow forces will be so that fluid flows through 112 He of entrance The fluid flow passages 110 of rotary valve 104 between outlet 114.For example, the pressure of the compression fluid at entrance 112 can carry For resisting the power (for example, along the direction towards outlet 114 in orientation of Fig. 1) of fluid flow control member 116, to supply To motor 204 electric power removal when make the seating face 118 of fluid flow control member 116 be rotated away from valve seat 120, and allow Fluid is towards 114 flowing of outlet or leaks.

Therefore, illustrative brake assemblies 208 provide reverse drive resistance to motor 204, are closed with being located in rotary valve 104 Closed position and when electric power is removed from electric actuator 102, avoid passing through the unwanted fluid flowing of fluid flow passages 110. In addition, brake assemblies 208 provide motor reverse drive resistance, without consuming electric power (that is, having basic zero power consumption).Cause This, in some embodiments, when rotary valve 104 is located at setting position, the electric power for being supplied to motor 204 can remove to preserve energy Amount, hence improves the performance and/or efficiency of electric actuator 102.

Fig. 3 A are the detail views of the illustrative motor 204 and illustrative brake assemblies 208 of Fig. 2.Fig. 3 B are Fig. 3 A The viewgraph of cross-section of motor 204 and illustrative brake assemblies 208.Fig. 3 C are the motors 204 of Fig. 3 A and Fig. 3 B and illustrative The viewgraph of cross-section of brake assemblies 208, have in engagement or clamped position Fig. 3 A illustrative brake(-holder) block 302, 304.Fig. 3 D are the viewgraph of cross-section of the motor 204 and illustrative brake assemblies 208 of Fig. 3 A and Fig. 3 B, are had in separation Or the brake(-holder) block 302,304 of Fig. 3 A of released position.Fig. 3 A, Fig. 3 B and Fig. 3 C are also shown to be shown in engagement or clamped position The brake(-holder) block 302,304 of example property.In the example of Fig. 3 A, Fig. 3 B and Fig. 3 C diagrams, a part for actuator casing 214 has been It is clear and remove.

Referring to Fig. 3 A, motor 204 is arranged in actuator casing 214.Motor 204 (for example, electro-motor) is via fixation Bracket 306 is couple to shell 214, and mounting bracket 306 is fixed relative to shell 214.Motor 204 passes through the support of bracket 306 and energy It is enough to be rotated relative to bracket 306.The embodiment of diagram includes the first gear 218 (Fig. 2) of transmission device 206, from braking group Part 208 extends to engage intermediate gear (not shown).

Brake assemblies 208 are operably coupled to motor 204 and bracket 306.Brake assemblies 208 include counteraction arm 308 and braking release arm 310.The first end of counteraction arm 308 is rigidly coupled to braking via braking release bolt 312 and is released Put the first end of arm 310.

Braking release arm 310 second end be arranged between opposite brake(-holder) block 302,304 brake(-holder) block gap 314 (or Chamber) in.The release arm pivot 316 extended from bracket 306 is arranged in the oval pivot of the second end of neighbouring braking release arm 310 In axis opening 318.The elliptical shape of pivot bore 318 allows braking release arm 310 to pivot peace relative to release arm pivot 316 It moves.Particularly, the ellipse of pivot bore 318 or rectangular shape allow to brake release arm 310 and motor 204 surrounds them Different rotation axis rotate freely through.Release arm protrusion 320 extends from the first side of braking release arm 310, engagement braking Piece 302, release arm protrusion 322 extend from the second side of braking release arm 310, engage brake(-holder) block 304.In addition, although diagram Embodiment in show two release arm protrusions from braking release arm 310 the first side extend and two release arm protrusions Portion extends from the second side of braking release arm 310, but in other embodiments, there can be the release arm protrusion of other numbers Portion extends from the first side of braking release arm 310 and/or the second side, for example, 1,4 or any other number.

In the illustrated embodiment, the first end of spring 324 be connected to the first brake(-holder) block 302 the first spring keep it is convex The second end of column 326, spring 324 is connected to the second spring holding pillar 328 of the second brake(-holder) block 304.

As shown in Figure 3B, output shaft 220 extends from motor 204, and rigidly couples (for example, via pin or press-fit) To first gear 218.In the diagram embodiment of Fig. 3 A and Fig. 3 B, first gear 218 is shown as spur gear, but can also make With other types of gear.

Counteraction arm 308 is couple to bracket 306 via the bearing assembly 330 including inner ring 332 and outer shroud 334.Bearing group The inner ring (or sleeve) 332 of part 330 is coupled to (for example, via pin or press-fit) and arrives bracket 306.The outer shroud of bearing assembly 330 334, which are coupled to (for example, via pin or press-fit), arrives counteraction arm 308.In this way, counteraction arm 308 can surround defeated 220/ spur gear 208 of shaft rotates.It is also possible, however, to use allowing other coupling elements of rotary motion, for example, bushing etc..Separately Outside, counteraction arm 308 is fixed to motor 204 via such as soket head cap screw (not shown).However, consolidating relative to motor 204 The other methods for determining counteraction arm 308 are also possible.

Spring 324 passes through 336 ground of release arm opening of braking release arm 310 to place, and is connect with pushing brake(-holder) block 302,304 Close 220/ spur gear 218 of output shaft.In the illustrated embodiment, release arm opening 336 is oval, to allow braking to discharge Arm 310 pivots or rotates and translate, without contact spring 324.

As being shown more clearly in Fig. 3 C and 3D, the first end of brake(-holder) block 302,304 is coupled via brake(-holder) block pivot 338,340 To bracket 306.Brake(-holder) block pivot 338,340 provides pivot to brake(-holder) block 302,304 respectively, to rotate in opposite direction.

Referring to Fig. 3 A, 3B, 3C and 3D, in operation, when brake assemblies 208 are located at bonding station, as shown in FIG. 3 C, Brake(-holder) block 302,304 engages 220/ spur gear 218 of output shaft.Between 220/ spur gear 218 of brake(-holder) block 302,304 and output shaft Friction prevents 220/ spur gear 218 of output shaft from rotating.The brake(-holder) block 302 of 220/ spur gear 218 of engagement (or clamping) output shaft, 304 offer reverse drive resistances and the movement for preventing motor 204, and thus prevent any valve stream for being operably coupled to motor The movement (for example, rotation) of dynamic control unit.In some embodiments, being supplied to the electric power of motor 204 can remove to protect Deposit energy.

Start in response to motor 204, the reaction torque of motor 204 makes relative to 204 fixed counteraction arm of motor 308 rotate via bearing assembly 330.Counteraction arm 308 is rigidly coupled to braking release arm 310 by braking release bolt 312, And therefore in response to reaction torque, braking release arm 310 is pivoted around release arm pivot 316.The load of spring 324 is made by counter Overcome with torque, release arm protrusion 320 engages along first direction and moves the first brake(-holder) block 302 and release arm protrusion 322 engage along the second direction opposite with first direction and move the second brake(-holder) block 304 (Fig. 3 D).Therefore, release arm 310 is braked Rotation bias brake(-holder) block 302,304, brake(-holder) block 302,304 is detached with 220/ spur gear 218 of output shaft.Brake(-holder) block 302, 304 with the separation of 220/ spur gear 218 of output shaft (for example, separation) in 220/ spur gear 218 of brake(-holder) block 302,304 and output shaft Between generate gap 342, and 220/ spur gear 218 of output shaft is allowed to rotate freely through in either direction.

Although certain illustrative method, apparatus and manufacture article, the covering model of the present invention is described herein It encloses and is not limited to this.On the contrary, present invention covers all methods in the scope of the claims for fairly falling in the present invention, dresses Set and manufacture article.

Claims (20)

1. a kind of device, including:
Brake is used for the output shaft of engaging motor;
Release arm is braked, the brake is operatively engaged to, the braking release arm has release arm protrusion;And
Counteraction arm is fixed relative to the braking release arm, and is operably coupled to the motor, so that the system Dynamic device is detached in response to the reaction torque of the motor with the output shaft of the motor, wherein
In response to the reaction torque of the motor, the braking release arm pivots and the release arm protrusion engages And the mobile brake, so that the brake is detached from the output shaft.
2. the apparatus according to claim 1, which is characterized in that further include motor support, the motor is by the motor support Frame supports, and is rotatable relative to the motor support in response to the reaction torque.
3. the apparatus of claim 2, which is characterized in that the motor support includes pivot, the braking release arm It is pivoted around described in response to the reaction torque.
4. the apparatus of claim 2, which is characterized in that the motor support includes pivot, the brake response It is pivoted around described in the reaction torque.
5. the apparatus according to claim 1, which is characterized in that the brake includes opposite multiple brake(-holder) blocks, described Multiple brake(-holder) blocks pivot along the opposite direction in response to the reaction torque.
6. device according to claim 5, which is characterized in that further include spring, brake(-holder) block described in the spring biasing comes The output shaft is engaged to prevent the rotation of the output shaft.
7. the apparatus according to claim 1, which is characterized in that further include motor, wherein the motor is electro-motor.
8. a kind of device, including:
First brake(-holder) block;
Second brake(-holder) block;
Spring, is operably coupled to first brake(-holder) block and second brake(-holder) block, and the spring is made described first Movable plate and second brake(-holder) block are maintained at bonding station, and the output of motor is prevented when being removed in the electric power for being supplied to motor The rotation of axis;
Release arm is braked, first brake(-holder) block and second brake(-holder) block, the braking release arm are operably coupled to With release arm protrusion;And
Counteraction arm is fixed relative to the braking release arm, and is operably coupled to the motor, the counteraction arm So that the braking release arm biases first brake(-holder) block and second braking in response to the reaction torque of the motor Piece detaches the output shaft;Wherein
In response to the reaction torque of the motor, the braking release arm pivots and the release arm protrusion engages And mobile first brake(-holder) block and second brake(-holder) block, so that first brake(-holder) block and second brake(-holder) block are from described Output shaft detaches.
9. device according to claim 8, which is characterized in that when electric power is provided to the motor, in response to the horse The reaction torque reached, the counteraction arm make the braking release arm bias first brake(-holder) block and second braking Piece.
10. device according to claim 9, which is characterized in that first brake(-holder) block and second brake(-holder) block are phases To brake(-holder) block and pivot along the opposite direction in response to the reaction torque.
11. device according to claim 9, which is characterized in that further include motor support, the motor is by the motor support Frame supports, and is pivoted relative to the motor support in response to the reaction torque.
12. according to the devices described in claim 11, which is characterized in that the motor support includes bearing, the counteraction arm The bearing rotary is surrounded in response to the reaction torque.
13. according to the devices described in claim 11, which is characterized in that the motor support includes pivot, the braking release Arm is pivoted in response to the reaction torque around described.
14. according to the devices described in claim 11, which is characterized in that first brake(-holder) block and second brake(-holder) block response It pivots along the opposite direction in the reaction torque.
15. device according to claim 8, which is characterized in that further include valve rod, the valve rod is operably coupled to institute Output shaft is stated, wherein the rotation of the output shaft makes the valve rod be moved along direction of rotation.
16. device according to claim 15, which is characterized in that the valve rod is operably coupled to the flowing of fluid valve Control unit.
17. device according to claim 8, which is characterized in that further include motor, and the wherein described motor is electronic horse It reaches.
18. a kind of device, including:
Brake apparatus is used for the output shaft of brake motor to prevent the rotation of the output shaft;And
Separator is used to from the output shaft detach the brake apparatus to allow the output shaft in response to the horse The rotation of the reaction torque reached, the separator include the braking release arm for having release arm protrusion;Wherein
In response to the reaction torque of the motor, the braking release arm pivots and the release arm protrusion engages And the mobile brake apparatus, so that the brake apparatus is detached from the output shaft.
19. device according to claim 18, which is characterized in that the separator is by least the one of the brake apparatus It is moved partially away from the output shaft.
20. device according to claim 18, which is characterized in that the brake apparatus includes for towards the output shaft At least part of mobile device of the mobile brake apparatus.
CN201410302222.9A 2013-07-02 2014-06-27 Device for providing motor reverse drive resistance CN104279363B (en)

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US13/933,946 US9634541B2 (en) 2013-07-02 2013-07-02 Apparatus to provide motor backdrive resistance
US13/933,946 2013-07-02

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CN104279363B true CN104279363B (en) 2018-09-18

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CN201410302222.9A CN104279363B (en) 2013-07-02 2014-06-27 Device for providing motor reverse drive resistance

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EP (1) EP3017530A2 (en)
CN (2) CN204042140U (en)
CA (1) CA2916024A1 (en)
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US9634541B2 (en) * 2013-07-02 2017-04-25 Fisher Controls International Llc Apparatus to provide motor backdrive resistance
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US10017241B2 (en) * 2015-02-24 2018-07-10 The Boeing Company Shock absorber assembly for power drive unit of a vehicle

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CN1184218A (en) * 1996-12-02 1998-06-10 山武·霍尼韦尔公司 Brake mechanism and powered actuator
CN1665708A (en) * 2002-05-29 2005-09-07 真空液压产品意大利Vhit股份公司 Pneumatic valve for braking systems
JP2006025580A (en) * 2004-06-07 2006-01-26 Kobelco Contstruction Machinery Ltd Vertical motor drive with brake, and working machine
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WO2015003026A2 (en) 2015-01-08
CN204042140U (en) 2014-12-24
CA2916024A1 (en) 2015-01-08
EP3017530A2 (en) 2016-05-11
US9634541B2 (en) 2017-04-25
CN104279363A (en) 2015-01-14
RU2666902C2 (en) 2018-09-13
RU2016101552A (en) 2017-08-07
US20150008349A1 (en) 2015-01-08

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